Season 1 - Episode Guide

The biggest winner is "The Biggest Loser" in this compelling new weight-loss drama in which two celebrity fitness trainers join with top health experts to help 12 overweight contestants transform their bodies, health and ultimately, their lives. Caroline Rhea ("Sabrina, The Teenage Witch") hosts the unscripted, one-hour series in which two competing teams follow comprehensive diet and exercise plans to undergo radical physical makeovers. Unique physical challenges, surprising alliances and irresistible temptations make the competition even tougher for the contestants, who ultimately have to decide which player gets eliminated each week. In the end, "The Biggest Loser" becomes the biggest winner, walking away with a healthier body - and $250,000.

Eleven contestants are left in this compelling weight-loss drama in which two celebrity fitness trainers join with top health experts to help overweight contestants transform their bodies, health and ultimately, their lives. Caroline Rhea ("Sabrina, The Teenage Witch") hosts the unscripted, one-hour series in which two competing teams follow comprehensive diet and exercise plans to undergo radical physical makeovers. In this episode, the red and blue teams face the ultimate bake-off challenge when the group who sells the most of their own baked goods at Universal City Walk gets to be pampered at a luxurious spa.

Ten contestants are left in this compelling weight-loss drama in which two celebrity fitness trainers join with top health experts to help overweight contestants transform their bodies, health and ultimately, their lives. Caroline Rhea ("Sabrina, The Teenage Witch") hosts the unscripted, one-hour series in which two competing teams follow comprehensive diet and exercise plans to undergo radical physical makeovers. In this episode, the red and blue teams take the stage for a lively "popstar" challenge, where the teams have to write and perform a song about their weight struggles in front of a live audience.

In this episode, the teams must face the challenge of climbing 74 stories in the tallest building west of the Mississippi.

Caroline Rhea ("Sabrina, The Teenage Witch") hosts this unscripted, one-hour series in which two competing teams follow comprehensive diet and exercise plans to undergo radical physical makeovers. During the challenge in this episode the two teams face their greatest temptation, and one more contestant is eliminated after that person's team realizes they are being manipulated.

Caroline Rhea ("Sabrina, The Teenage Witch") hosts this unscripted, one-hour series in which two competing teams follow comprehensive diet and exercise plans to undergo radical physical makeovers. In this episode, the teams put their new stamina to the test and Blue Team Trainer Bob reaches his boiling point after one contestant refuses to workout. Also, an elimination surprise divides one team.

Caroline Rhea ("Sabrina, The Teenage Witch") hosts this unscripted, one-hour series in which two competing teams follow comprehensive diet and exercise plans to undergo radical physical makeovers. In this episode, a race on stationary bikes to clock the most miles by midnight offers new better-fitting clothes as the prize for highest mileage. In addition, the contestants learn of a new twist in the way the game is played.

Caroline Rhea ("Sabrina, The Teenage Witch") hosts this unscripted, one-hour series in which two competing teams follow comprehensive diet and exercise plans to undergo radical physical makeovers. In this episode, everyone "re-gains" the weight they lost after eight weeks of diet and exercise. This happens in the challenge in which they must run a quarter mile while wearing a vest weighted with the total amount of pounds the contestant previously lost. In addition, everyone reaches a personal best, although one contestant threatens to throw in the towel.

This special episode of this unscripted, one-hour series hosted by Caroline Rhea ("Sabrina, The Teenage Witch") gives viewers an often comic look back at the first eight episodes. Highlights include never-before-seen footage of contestant exit interviews; bloopers and temptations. Viewers will learn just who breaks down and cheats when they thought the cameras weren't watching.

Caroline Rhea ("Sabrina, The Teenage Witch") hosts this unscripted, one-hour series in which two competing teams follow comprehensive diet and exercise plans to undergo radical physical makeovers. After nine weeks of strenuous workouts at the hands of Trainers Jillian and Bob, it's payback time as the contestants turn the tables and "train" the trainers. This episode is also the final weigh in at the ranch, preceded by the contestants reflecting on this journey that has changed their lives, and followed by a vote to trim the players' numbers down to three. Tearful goodbyes then accompany the trio as they realize it is time to go back to their regular lives without the support of their teams and trainers.

After weeks of training and careful eating, it comes down to choosing the "biggest loser" in this special 90-minute season finale. The winner will be chosen during a live portion of the telecast.

This special post-finale episode follows up on some of the surprises announced in the season finale the week before. The champion of the entire competition and viewers discover more about the lives of the other contestants and their fighting spirit.